Silvester, M. Living Service: How to deliver the service of the future today : How to deliver the service of the future today (1.). Pearson Education UK.
Čikaški stil citiranja (17. izdanje)Silvester, Marc;Ahmed. Living Service: How to Deliver the Service of the Future Today : How to Deliver the Service of the Future Today. 1. Pearson Education UK.
MLA način citiranja (8. izdanje)Silvester, Marc;Ahmed. Living Service: How to Deliver the Service of the Future Today : How to Deliver the Service of the Future Today. 1. Pearson Education UK.
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